[koheripbal]

Since this took place outside the Federal Courthouse during a riot where members of that group were attempting to burn down the courthouse, the Federal Officers have jurisdiction to arrest and prosecute any suspects at the event.

The officers in question have no duty to identify nor use police marked vehicles (note their uniform DOES say POLICE on it).

As long as the officers present the suspects in court with convincing evidence that they were personally involved, they're going to federal prison.

source: Best friend is a federal officer.

tldr: Do not try to burn down a Federal Courthouse. You will not pass Go. You will not collect $200.